Motherboard assembly

Abstract

A computer motherboard includes a board body and an expansion unit that is provided on the board body and that defines a hybrid expansion slot that complies with the Peripheral Component Interconnect (PCI) specification and the Peripheral Component Interconnect Express (PCIE) specification.

1. A motherboard assembly comprising:
 a board body; 
 an expansion unit provided on said board body and defining a hybrid expansion slot that complies with the Peripheral Component Interconnect (PCI) specification and the Peripheral Component Interconnect Express (PCIE) specification; and 
 a riser card connected removably to said hybrid expansion slot and formed with at least a first expansion slot that complies with the PCI specification and a second expansion slot that complies with the PCIE specification; 
 wherein said hybrid expansion slot has two opposite sides, said expansion unit having 100 first conductive pins that are marked from A 1  to A 100  and that are formed on one of said sides of said hybrid expansion slot, and 100 second conductive pins that are marked from B 1  to B 100  and that are formed on the other of said sides of said hybrid expansion slot, said first conductive pins that are marked from A 1  to A 63  and said second conductive pins that are marked from B 1  to B 63  correspond to pins of the PCIE×16 specification, said first conductive pins that are marked from A 64  to A 100  and said second conductive pins that are marked from B 64  to B 100  correspond to pins of the PCI specification; and 
 wherein said riser card has conductive pins corresponding to said first conductive pins and said second conductive pins. 
 
     
     
       2. The motherboard assembly of  claim 1 , wherein said first conductive pins that arc marked from A 1  to A 18  and said second conductive pins that are marked from B 1  to B 18  comply with the PCIE×1 specification. 
     
     
       3. The motherboard assembly of  claim 1 , wherein said second expansion slot of said riser card supports at least one of the PICE×1 specification, the PCIE×4 specification, the PCIE×8 specification, and the PICE×16 specification. 
     
     
       4. The motherboard assembly of  claim 3 , wherein said second expansion slot of said riser card supports the PCIE×1 specification and the PCIE×16 specification.